<script setup>
import { computed } from 'vue';
import { useStore } from 'vuex'
import { useRoute, useRouter } from 'vue-router';
//拿到 store 实例
const store = useStore()
//当前的路由对象
const router = useRouter()
const route = useRoute()
const selectMenu = computed(() => {
  return store.state.menu.selectMenu
})

const userInfo =JSON.parse(localStorage.getItem('pz_userInfo'))

//点击关闭tag
const closeTab = (item, index) => {
  store.commit('closeMenu', item)
  //删除非当前页tag
  if (route.path !== item.path) {
    return
  }
  const selectMenuData = selectMenu.value
  //删除的是最后一项
  if (index === selectMenuData.length) {
    //如果tag只有一个元素
    if (!selectMenuData.length) {
      router.push('/')
    } else {
      router.push({
        path: selectMenuData[index - 1].path
      })
    }
  } else {//如果删除的是中间位置tag
    router.push({
      path: selectMenuData[index].path
    })
  }
}
const handleClick = (command) => {
  if(command === "cancle"){
    localStorage.removeItem('pz_token')
    localStorage.removeItem('pz_userInfo')
    localStorage.removeItem('pz_v3pz')
    window.location.href = window.location.origin
  }
}
</script>
<template>
  <div class="header-container">
    <div class="header-left flex-box">
      <el-icon @click="store.commit('collapseMenu')" class="icon" size="20">
        <Fold />
      </el-icon>
      <ul class="flex-box">
        <li v-for="(item, index) in selectMenu" :key="item.path" class="tab flex-box"
          :class="{ selected: route.path === item.path }">
          <el-icon size="12">
            <component :is="item.icon" />
          </el-icon>
          <RouterLink class="text flex-box" :to="{ path: item.path }">
            {{ item.name }}
          </RouterLink>
          <el-icon class="close" size="12" @click="closeTab(item, index)">
            <Close />
          </el-icon>
        </li>
      </ul>
    </div>
    <div class="header-right">
      <el-dropdown @command="handleClick">
        <div class="el-dropdown-link flex-box">
          <el-avatar :src="userInfo.avatar" />
          <p class="user-name">{{ userInfo.name }}</p>
        </div>
        <template #dropdown>
            <el-dropdown-item command="cancle">退出</el-dropdown-item>
        </template>
      </el-dropdown>
    </div>
  </div>
</template>

<style scoped lang="less">
.flex-box {
  display: flex;
  align-items: center;
  height: 100%;
}

a {
  height: 100%;
  color: #333;
  font-size: 15px;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  background-color: #fff;
  padding-right: 25px;

  .header-left {
    display: flex;
    align-items: center;
    height: 100%;

    .icon {
      width: 45px;
      height: 100%;
    }

    .icon:hover {
      background-color: #f5f5f5;
      cursor: pointer;
    }

    .tab {
      padding: 0 10px;
      height: 100%;

      .text {
        margin: 0 5px;
      }

      .close {
        visibility: hidden;
      }

      &.selected {
        a {
          color: #409eff;
        }

        i {
          color: #409eff;
        }

        background-color: #f5f5f5;
      }
    }

    .tab:hover {
      background-color: #f5f5f5;

      .close {
        visibility: inherit;
        cursor: pointer;
        color: #333;
      }
    }
  }

  .header-right {
    .user-name {
      margin-left: 10px;
    }
  }
}
</style>